Television antenna



Jan. 28, 1958' P. D. HALE TELEVISION ANTENNA 2 Sheets-Sheet 1 Filed Aug.6, 1954 m m 9 E Z a wz V d m 94 W/ 11, 2, 7 M HUM W M PHILLIP a. HALE,

ATTOENEYS.

Jan. 28, 1958 P. D.'HALE 2,821,710

TELEVISION ANTENNA INVENTOR. PHILLIP a. HALE} Arraezvs vs.

United Stats atentO I TELEVISION ANTENNA Phillip D. Hale, Dallas, Tex.,assignor of five percent to George H. Ferriman, Artesia, N. Mex.

Application August 6, 1954, Serial No. 448,167

4 Claims. (Cl. 343-806) This invention relates to improvements intelevision receiving antennae, and the primary object of the inventionis to provide an improved antenna attachment for television receivingsets to supplement or replace existing built-in antennae, for improvedlocal and fringe reception of V. H. F., U. H. F., and color picturesignals.

Another important object of the invention is the provision of an antennaof the character indicated above which comprises two novel matcheddipoles which are unconnected to each other except at the lead-in wireto the associated television set, the antenna being non-directional forlocal reception.

A further important object of the invention is to provide an antenna ofthe character indicated above which is in the form of a decorativeframed picture adapted to be hung on the wall of a room near theassociated television set.

Other important objects and advantageous features of the invention willbe apparent from the following description and the accompanyingdrawings, wherein, for purposes of illustration only, a specificembodiment of the invention is set forth in detail.

In the drawings:

Figure 1 is a general perspective view showing an antenna in accordancewith the present invention mounted on a wall of a room near a televisionset, and showing in phantom lines an alternative mounting of theantenna;

Figure 2 is a rear elevation of said antenna;

Figure 3 is an enlarged, contracted transverse vertical section taken onthe line 3-3 of Figure 2;

Figure 4 is an enlarged plan view of the two dipoles mounted on a sheetor plate;

Figure 5 is a perspective view on a reduced scale of the antennacomponent; and

Fig. 6 is a fragmentary horizontal section taken on the line 66 ofFigure 5.

Referring in detail to the drawings, wherein like numerals designatelike parts throughout the several views, the illustrated antenna,generally designated at 7, comprises a picture frame 8, preferably ofrectangular shape and having upper and lower longitudinal members 9 and10, respectively, and vertical end members 11, 11. The said framemembers have communicating grooves 12 in their rear, laterally inwardcorners, which define a stop flange 13 extending around the front side14 of the frame 8.

A glass 15 fits in the groove 12 and engages the back of the flange 13and a decorative picture plate or sheet 16 fits in the groove 12 andengages the back of the glass 15.

Also fitting in the groove 12 and engaging the back of the picture plate16 is a rectangular antenna component 17 which is held against the backof the picture plate 16 by a backing plate 18 which is secured in placeby any suitable means, such as staples 19, driven into a surface of thegroove 12. A hanger loop 20 can be provided on the back of the upperlongitudinal member 9 of the frame 8 for mounting or suspending theantenna 7 upon a room wall 21 near a television set 22 in a room 23.

2,821,710 Patented Jan. 28, 1958 The antenna component 17 comprises afront rectangular dielectric plate or sheet 24, a similar backrectangular dielectric plate or sheet 25, and an edging 26 extendingaround and secured to the peripheral edges of the plates 24 and 25 so asto secure the same together in registry with each other. The plates 24and 25 may be of cardboard.

Secured by any suitable means, such as cement, to the inward side ofeither or both of the dielectric plates, such as the plate 24, asillustrated in Figure 4, are two similar dipoles A and B, which arereversed with respect to each other.

Each dipole is formed of a single continuous, preferably steel wire, ofa length of fifty-three inches and of a diameter of .0145 inch.

The dipole A comprises two similar vertical narrow loops 29 and 30,whose parallel sides 31, 32 and 33, 34, respectively, are seven incheslong, the sides being connected at their upper ends only by inchconnections 35 and 36, respectively.

The lower end of the side 34 of the loop 30 terminates in a lateralconnection 37 which is /4 of an inch long, and which is connected to thelower end of a two inch high wire portion 38 which parallels the side34.

The lower end of the side 31 of the loop 29 terminates in a lateralconnection 39, of inch length, which is connected to the lower end ofthe outer leg 40 of a wide loop 41, the leg 40 being parallel to andspaced from the leg 31 of the loop 29 at a distance of of an inch.

The large loop 41 includes a connecting portion 42 extending inwardlyacross the tops of the loops 29 and 30 and spaced upwardly therefrom ata distance of about of an inch, the connecting portion 42 being 4%inches in length.

The connecting portion 42 terminates at its inward end in a dependinginner leg 43 of the wide loop 41, the leg 43 being laterally spaced fromthe inner leg 34 of the loop 30 at a distance of 1% inches. The lowerend of the leg 43 extends below the loops 29 and 30 and terminates in aportion 44 which leads to the antenna lead cable 34 of the televisionset 46.

The adjacent legs 32 and 33 of the narrow loops 29 and 30 are connectedtogether at their lower ends by a connection 46 about of an inch long.

The other dipole b is similar to but reversed with respect to the dipoleA. The inner legs 43 and 43 of the wide loops 41 and 41 of the twodipoles are parallel and spaced from each other at a distance of oneinch.

The dimensions of the dipoles A and B, and of their components, as givenherein above are critical to best results in the use of the antenna 7.

It is to be observed that there are no direct electrical connectionsbetween the dipoles A and B, so that both dipoles radiate separately,each dipole receiving its own signal and transmitting this signal to theantenna coil or transformer of the television set 46, so that the setreceives both signals at the tuner of the set.

For local reception the antenna 7 is non-directional. However, for longdistance and fringe reception, the antenna operates better when turnedto face the broadcasting station desired to be received. The antenna 7,for local reception may be mounted on any room wall 47 of a room 48 inwhich the television set 46 is located.

What is claimed is:

1. In a television antenna, a pair of matched and reversed antennas,said antennas being open and unconnected to each other, each of saidantennas comprising a pair of laterally spaced narrow vertical loops anda single wide vertical loop embracing the narrow vertical loops, anddielectric means mounting said antennas in side by side relations,substantially in the same plane.

2. In a television antenna, a pair of matched and reversed antennas,said antennas being open and unconnected to each other, eachvof saidantennas consisting of a pair of laterally spaced narrow vertical loopsand a single wide vertical loop embracing the narrow vertical loops,said narrow vertical loops being connected together; onelof said narrowloops having a'free'terminal and theother narrow loop-being connectedtoone'end of-the wideloop and the other end of the wide loop terminatingirraterminal for connectionto a television set lead-in wire, anddielectric means mounting said antennasin thersameplane.

3. In a television antenna, a-pair=of matched andreversed"antennas,-said antennas being open and unconqnected to eachother, eachof said'antennas consisting of a plane andlaterallyldisplaced with respect to each other.

4. In a television antenna, a pair of laterally displaced, coplanarantennas, each antenna consisting of a wire fifty-three inches long,each wire providing a narrow inner loop, a narrow outer loop, and awider loop, said narrow loops having spaced parallel legs seven incheslong connected at one end by connections of an inch long, a leg of theinner loop terminating in a lateral connector, said lateral connectorterminating in a wire portion twc inches long, said wide loop having anouter leg parallel to and spaced laterally outwardly from said outernarrow loop and connected at one'end to a leg of the outer loopsaid-wider-loop having a connecting portion 4% inches long reachingacross and spaced from said narrow loops said connecting portionterminating in an inner leg spacec laterallyinwardly from theinnernarrow loop, the inncl leg of the Wide loop terminating in a terminalfor connection to the lead-in wire of a television set, the antennasbeing otherwise unconnected to each other.

References Cited in the file of this patent UNITED STATES PATENTSDoerner Oct. 14, 1952 FOREIGN PATENTS 451,213 Great Britain July 31,193(

